---
id: CVE-2026-102335
title: >-
  Nginx Proxy Manager through 2.16.0 fails to restrict the advanced_config field
  to administrators, allowing non-admin users with manage permissions to inject
  arbitrary nginx directives
summary: >-
  Nginx Proxy Manager through 2.16.0 fails to restrict the advanced_config field
  to administrators, allowing non-admin users with manage permissions to inject
  arbitrary nginx directives. Attackers can inject malicious nginx configuration
  s…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N'
cwe:
  - CWE-863
vendor: NginxProxyManager
product: nginx-proxy-manager
affected:
  - nginx-proxy-manager <= 2.16.0
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T23:17:02.007'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102335'
references:
  - url: 'https://github.com/NginxProxyManager/nginx-proxy-manager'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/README.md#L36
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/user.js#L52-L62
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/templates/proxy_host.conf#L28
    label: disclosure@vulncheck.com
  - url: 'https://github.com/NginxProxyManager/nginx-proxy-manager/issues/5749'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/NginxProxyManager/nginx-proxy-manager/pull/5908'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/nginx-proxy-manager-through-2.16.0-improper-authorization-via-advanced-config
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-28T23:23:00.571Z'
---

## Overview

Nginx Proxy Manager through 2.16.0 fails to restrict the advanced_config field to administrators, allowing non-admin users with manage permissions to inject arbitrary nginx directives. Attackers can inject malicious nginx configuration such as alias directives to serve arbitrary files or control routing for their assigned hosts.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.